So I got a bit further this time, message is a bit different and looking in /var/run/hmc/clusters/clustername/findSshableNodes I got three filename.err files corresponding to the number of nodes involved. The same message appears in all of them
Permission denied, please try again. I did chmod 400 on the .ssh. I also created passwordless ssh for root. Not sure what else I should do :(. Thank you. On 8/3/12 6:03 PM, "Hitesh Shah" <[email protected]> wrote: >@Atrem, > >Please change the permissions to 400 and retry. >Also, you can take a look at /var/run/hmc/clusters/<cluster name>/<dir >foo>/ where <dir foo> maps to a stage in the node discovery process. The >log outputs from each host and the error codes will be recorded in that >dir. > >@Jennie, > >Unfortunately, the code currently assumes the user to be root. There are >a couple of places where that implicit handling will need to change and >the script that sets up the agent node also will need to change slightly >to run certain commands as sudo if the user is not root. The above should >likely get non-root users to work if there is passwordless sudo enabled >for the user ( or an expect wrapper would be needed to if there is no >passwordless sudo set up ). > >thanks >-- Hitesh > >On Aug 3, 2012, at 2:19 PM, Artem Ervits wrote: > >> I just setup a one-way root passwordless ssh access from Ambari to the >>two other nodes. Still can't get it to work. I disabled iptables and >>SElinux on all machines. I found Hitesh's powerpoint on slideshare :), >>http://www.slideshare.net/Hadoop_Summit/managing-hadoop-clusters-with-amb >>ari and am looking at the Hortonworks install guide as well. >> >> Result of ssh -I priv_key root@remote returned: >> >> <image001.png> >> >> In the error log, I found errors here: >> >> [2012:08:03 >>20:52:47][ERROR][sequentialScriptExecutor][sequentialScriptRunner.php:272 >>][]: Encountered total failure in transaction 100 while running cmd: >>/usr/bin/php ./addNodes/findSshableNodes.php with args: demo root 41 100 >>42 /var/run/hmc/clusters/demo/hosts.txt >> >> >> My hosts.txt file looks like this: >> >> namenode >> datanode >> >> >> -----Original Message----- >> From: Jennie Cochran-Chinn >>[mailto:[email protected]] >> Sent: Friday, August 03, 2012 4:49 PM >> To: [email protected] >> Subject: Re: Ambari initialize cluster step 2 issue >> >> What if hduser has passwordless sudo? >> >> On 8/3/12 1:33 PM, "Hitesh Shah" <[email protected]> wrote: >> >> >Yes - the ssh key needs to be for root. The node discovery and setup >> >phase involves installing rpms, etc that require root-level >>permissions. >> > >> >-- Hitesh >> > >> >On Aug 3, 2012, at 1:20 PM, Jennie Cochran-Chinn wrote: >> > >> >> Gotta be root user? Sounds like Artem is using hduser? >> >> >> >> On 8/3/12 1:16 PM, "Vitthal "Suhas" Gogate" <[email protected]> >> >>wrote: >> >> >> >>> Looks like things are failing while contacting and doing sanity >> >>> checks for the nodes being added.. although I guess you need to use >> >>> the private rsa key to do the passwd-less ssh to remote nodes.. You >> >>> can manually try from ambari server ssh -i priv_key >> >>> root@remote_host to see that works.. >> >>> >> >>> >> >>> Also can you post the relevant part of the log at >> >>> /var/log/hmc/hmc.log to see what exact error you getting.. >> >>> >> >>> --Suhas >> >>> >> >>> On Fri, Aug 3, 2012 at 12:09 PM, Artem Ervits <[email protected]> >>wrote: >> >>>> Hello all, I'm trying to install a Hadoop cluster with Ambari on >> >>>>one VM and two additional nodes that will serve as a hadoop >> >>>>cluster. On step 2, where it says to add nodes, I select the >> >>>>id_rsa.pub file for the user I'm running the install with, let's >> >>>>call it hduser. I already copied the ssh keys to all machines and >> >>>>setup passwordless ssh to each and all machines. I also select >> >>>>/etc/hosts file that has all three VMs. When I hit next, it fails >> >>>>for some or all of the machines. I then created another file called >> >>>>hosts, containing the names of only two machines participating in a >> >>>>hadoop cluster, excluding the Ambari server. The add nodes step >> >>>>fails again due to permission denied again. It does, still include >> >>>>my Ambari server as the 3rd server to install hadoop on. Is there >> >>>>anything that I'm doing wrong? >> >>>> >> >>>> Thank you. >> >>>> >> >>>> This electronic message is intended to be for the use only of the >> >>>>named recipient, and may contain information that is confidential >> >>>>or privileged. If you are not the intended recipient, you are >> >>>>hereby notified that any disclosure, copying, distribution or use >> >>>>of the contents of this message is strictly prohibited. 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